Use Flash and/or Overpower(Both if you are a Marauder/Warrior, Flash atleast twice in a row if you are a Gladiator/Paladin).

While yes, it IS important for you guys to use your rotations(The window that accomidates the skill glow yellow when you follow the skill pattern), using Flash/Overpower at the start of dungeon encounters removes ALOT of the potential burden the rest of the party has to deal with. You guys are Tanks, you are designed to be taking everyone's hits so that there won't be no issues.

I'm not saying this to be mean or evil, in fact, I usually tell all the Tanks I see that don't use Flash/Overpower to use them in the most sincere manner possible(until it's been like 2-3 boss encounters and the whole dungeon without it's use, but I digress). If you can't deal with this...then you may need to choose another class.

Sincerely, Xhominid.